21332640

素因数分解:

$2^5\times 3^1\times 5^1\times 7^2\times {\mathrm{907}}^1$

素因数の和:939

約数の個数: 144

約数和(自身を含む): 78255072

約数和(自身を除く): 56922432

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 32, 35, 40, 42, 48, 49, 56, 60, 70, 80, 84, 96, 98, 105, 112, 120, 140, 147, 160, 168, 196, 210, 224, 240, 245, 280, 294, 336, 392, 420, 480, 490, 560, 588, 672, 735, 784, 840, 907, 980, 1120, 1176, 1470, 1568, 1680, 1814, 1960, 2352, 2721, 2940, 3360, 3628, 3920, 4535, 4704, 5442, 5880, 6349, 7256, 7840, 9070, 10884, 11760, 12698, 13605, 14512, 18140, 19047, 21768, 23520, 25396, 27210, 29024, 31745, 36280, 38094, 43536, 44443, 50792, 54420, 63490, 72560, 76188, 87072, 88886, 95235, 101584, 108840, 126980, 133329, 145120, 152376, 177772, 190470, 203168, 217680, 222215, 253960, 266658, 304752, 355544, 380940, 435360, 444430, 507920, 533316, 609504, 666645, 711088, 761880, 888860, 1015840, 1066632, 1333290, 1422176, 1523760, 1777720, 2133264, 2666580, 3047520, 3555440, 4266528, 5333160, 7110880, 10666320, 21332640]

約数ペア:

[(1, 21332640), (2, 10666320), (3, 7110880), (4, 5333160), (5, 4266528), (6, 3555440), (7, 3047520), (8, 2666580), (10, 2133264), (12, 1777720), (14, 1523760), (15, 1422176), (16, 1333290), (20, 1066632), (21, 1015840), (24, 888860), (28, 761880), (30, 711088), (32, 666645), (35, 609504), (40, 533316), (42, 507920), (48, 444430), (49, 435360), (56, 380940), (60, 355544), (70, 304752), (80, 266658), (84, 253960), (96, 222215), (98, 217680), (105, 203168), (112, 190470), (120, 177772), (140, 152376), (147, 145120), (160, 133329), (168, 126980), (196, 108840), (210, 101584), (224, 95235), (240, 88886), (245, 87072), (280, 76188), (294, 72560), (336, 63490), (392, 54420), (420, 50792), (480, 44443), (490, 43536), (560, 38094), (588, 36280), (672, 31745), (735, 29024), (784, 27210), (840, 25396), (907, 23520), (980, 21768), (1120, 19047), (1176, 18140), (1470, 14512), (1568, 13605), (1680, 12698), (1814, 11760), (1960, 10884), (2352, 9070), (2721, 7840), (2940, 7256), (3360, 6349), (3628, 5880), (3920, 5442), (4535, 4704)]